Today we also started collecting environmental data about the site. We've got a rain gauge,a light sensor, and an anemometer for measuring wind speed. This data will help us infer rates of evapotranspiration from the platforms.
At this stage of the study, we are trying to get all the instruments ready to measure the water cycle on our platforms while the plants get establsihed. Here is a picture of the soil moisture sensor we will use. Each sensor will be calibrated to the specific conditions in the greenroof media.
